In order to find the whereabouts of the jade sword, a three-way war broke out between the immortals, demons and dragons. With the help of Uncle Lan, Qin Yu got the eighth jade sword and became the leader of the fourth largest force under the sea. Qin Yu was determined to face a new challenge - to collect all the jade swords and open the immortal palace. Finally, the immortal palace slowly opened, and when he stepped into this treasure land, the real test of life and death had just begun.